Water and its importance to human life were the centre of the world’s attention last week. March 22 was World Water Day and   36   the theme “Water for Life”.
There are more than one billion people in the world who live without   37  drinking water. The United Nations   38   to cut this number in half by 2015.
Solving such a big problem seems like a(n)   39  challenge. But everyone,   40    teenagers, can do something to help. A teenage girl in the US has set an example to the   41 of her age around the world.
Rene Haggerty, 13, was awarded the 2004 Gloria Barron Prize for her work—   42    discarded(废弃的) batteries(电池)which pollute water.
In 2003, Haggerty went on a field trip to the Great Lakes Science Centre in Ohio. There she saw an exhibit about how   43  in old batteries harm the water of Lake Erie.
Haggerty learnt that   44   the batteries was an easy solution. “I think everybody can do it, because everyone     45     batteries, and it can make a big difference.” With these words, she began to   46     awareness in her area.
She   47   her county government and school board. She got permission to start a recycling programme in schools   48   the public library, hospital, and churches. With the help from her family, friends and local waste-management  49  , she gathered containers, arranged transportation, and made a(n)   50  video.
Over the past two years, she collected four tons of batteries and drew the attention of officials, who were in charge of a battery recycling programme but had made   51   progress.
When asked   52   she feels like a hero, Haggerty is quite __53 . “Not really. Well, maybe for the fish I saved!”
Every year the Gloria Barron Prize is   54  to young Americans aged 8 to 18 who have shown leadership and courage in   55   the public and the planet. Each year ten winners receive US $ 2,000 each, to help with their education costs or their public service work.
【小题1】..

A.hadB.gaveC.wroteD.discussed
【小题2】.
A.enoughB.safe C.muchD.polluted
【小题3】..
A.asksB.ordersC.hopes D.ensures
【小题4】..
A.good B.strongC.importantD.unreal
【小题5】.
A.especiallyB.sometimesC.evenD.seldom
【小题6】.
A.boysB.othersC.studentsD.grown-ups
【小题7】.
A.collecting B.sellingC.buyingD.using
【小题8】.
A.thingsB.chemicalsC.waterD.air
【小题9】.
A.makingB.recycling C.reducing D.handling
【小题10】..
A.uses B.hasC.throws D.needs
【小题11】..
A.tell B.increaseC.spread D.inform
【小题12】..
A.talked to B.listened toC.heard fromD.thought about
【小题13】..
A.andB.besidesC.as well asD.as good as
【小题14】..
A.officials B.workersC.clerksD.experts
【小题15】.
A.industrial B.agricultural C.scientificD.educational
【小题16】..
A.muchB.noC.someD.little
【小题17】.
A.ifB.howC.whenD.why
【小题18】.
A.proudB.glad C.modestD.worried
【小题19】.
A.praisesB.helpsC.supportsD.honors
【小题20】.
A.awardingB.savingC.servingD.favoring

完形填空(共20小题;每小题1.5分,满分30分)
阅读下面短文,掌握其大意,从第每题所给的A、B、C、D四个选项中,选出最佳选项
How often do you let other people’s nonsense change your mood? The mark of a successful person is how   36  he can get back his focus on what is important.
Two years ago I gained the knowledge about the Law of the Garbage Truck. I   37  it in a taxi. I got on a taxi, and we headed for Grand Central Station. We were  38 in the right lane(行车道) when   39 a black car jumped out of a parking space right in front of us. My taxi driver stepped on his brakes(刹车)heavily, and    40  the car’s back end by just inches!
The driver almost caused a(n)   41 , saying bad words at us. My taxi driver just smiled and waved at the guy  42   . So, I said, “This guy almost   43  your car and sent us to the   44  !” On the way to the Grand Central Station, my taxi driver told me what I now   45  “The Law of the Garbage Truck.”
“Many people are like garbage trucks. They run around full of   46  , full of frustration, full of anger, and full of disappointment. As their garbage becomes more, they needed a(n)   47 to dump(扔) it. When someone wants to dump it on you, don’t   48  it. You just smile, wish them well, and focus on important things quickly.
Good leaders know they have to be  49 for their next meeting. Good parents know that they have to welcome their children home from school with hugs and kisses. Good  50 and parents know what is   51 for them. The bottom line is that   52 people do not let garbage Trucks take over their day.
Life is too   53 to wake up in the morning with  54 , so take your time and love the people who treat you right.  55 about the ones who don’t. Don’t be regretful for your life.

【小题1】.
A.quickly
B.hardly
C.completely
D.directly
【小题2】.
A.realized
B.observed
C.concluded
D.learned
【小题3】
A.walking
B.driving
C.running
D.talking
【小题4】
A.suddenly
B.slowly
C.secretly
D.finally
【小题5】.
A.struck
B.hit
C.approached
D.missed
【小题6】
A.argument
B.fire
C.accident
D.debate
【小题7】
A.impatiently
B.friendly
C.angrily
D.impolitely
【小题8】
A.destroyed
B.stole
C.burned
D.caught
【小题9】
A.station
B.office
C.park
D.hospital
【小题10】
A.imagine
B.believe
C.call
D.expect
【小题11】
A.energy
B.garbage
C.happiness
D.possibility
【小题12】
A.assistant
B.chance
C.tool
D.place
【小题13】
A.value
B.refuse
C.mind
D.ignore
【小题14】
A.ready
B.eager
C.anxious
D.suitable
【小题15】
A. teachers
B doctors
C. drivers
D. leaders
【小题16】
A.useful
B.important
C.necessary
D.dangerous
【小题17】.
A.successful
B.busy
C.silly
D.common
【小题18】.
A.long
B.hard
C.short
D.exciting
【小题19】
A.aims
B.dreams
C.hopes
D.regrets
【小题20】
A. Point
B. Forget
D. Wonder
D. Dream
 

完形填空(共20小题,每题1.5分,共30分)
阅读下面短文,掌握其大意,然后从下列各题所给的四个选项(A、B、C和D)中,选出最佳选项。
Sometimes people call each other “scared-cat”, but have you ever thought about this expression? When a cat is frightened, its heart starts beating faster, its muscles (肌肉) get tense, and there are changes in the chemicals in its blood-stream.
Although the cat doesn’t 36  this, its body is getting ready for action. If the danger continues, this animal will do one of the two things. It will 37 itself, or it will run away as fast as it can.
   38 , when people are excited, angry, scared, or aroused by other emotions, our bodies also go through many 39  changes. Our hearts beat faster, and our muscles get tense. All of these changes make us more alert and ready to react. We, too, get ready to defend ourselves 40  run.
Human beings, 41  , have a problem that animals never face. If we give way to our feelings and let them 42  , we can get into trouble. Have you ever said something in anger, or hit somebody and regretted it later? Have you ever shouted at a teacher, told someone you were lonely, or said you were in love, and then 43  later you had kept your mouth shut? It isn’t always 44  to express your feelings freely.
Does this mean that it’s smarter always to 45  our feelings? No! If you 46  feelings of anger, sadness, and bitterness hidden away or bottled up inside, your body stays47  . Physical illnesses can develop. It can actually be48  for your health.
Feelings that you keep all bottled up inside, don’t just 49  . It’s like you bought some bananas and stuck them in a cupboard. You might not be able to see them, but 50  you’d smell them. And if you opened the cupboard, you’d  51  little fruit flies hovering (盘旋) all over them. They’d be rotten.
You can try to treat emotions 52  they were bananas in the cupboard. You can 53  they don’t exist, but they’ll still be 54  . And at last you’ll have to 55  them, just like those bananas.

【小题1】
A.mind B.admit C.realize D.remember
【小题2】
A.save B.help C.defend D.hide
【小题3】
A.Truly B.Frequently C.Similarly D.Differently
【小题4】
A.chemical B.physical C.health D.ill
【小题5】
A.and B.or C.but D.yet
【小题6】
A.therefore B.but C.besides D.however
【小题7】
A.take off B.take on C.take over D.take up
【小题8】
A.wished B.hoped C.blamed D.shared
【小题9】 
A.useful B.right C.easy D.wise
【小题10】 
A.handle B.hurt C.hide D.prevent
【小题11】
A.keep B.find C.control D.let
【小题12】
A.relaxed B.tense C.same D.different
【小题13】
A.good B.harmful C.helpful D.useful
【小题14】
A.go away B.go on C.go up D.go out
【小题15】 
A.long before B.as usual C.before longD.right away
【小题16】
A.meet B.observe C.catch D.see
【小题17】
A.as if B.just as C.just after D.even though
【小题18】
A.pretend B.expect C.decide D.assume
【小题19】 
A.in B.around C.over D.beyond
【小题20】
A.eat up B.deal with C.throw away D.send out

完形填空(共20小题;每小题1.5分,满分30分)
阅读下面短文,从短文后所给各题的四个选项(A、B、C、D)中,选出可以填入空白处的最佳选项。
When my children were small, the toughest part of the day was getting to work. There were diapers(尿布), formula(奶粉),  36  of clothes to worry about for the children. There was their breakfast, and I must  37  they were clean and ready for the day. It was pretty chaotic(混乱的). I have always been one to  38  more about making sure everyone else had what they needed than to take care of myself. 39 , I had my clothing and my packed lunch set out so that I could quickly get ready and then turn my  40  back to getting the children ready.
I tried to keep my  41  pretty easy in the morning. There just wasn’t time, but that was OK as long as I kept moving. I would manage a  42  look at myself in the full-length mirror just before I  43  out the door.
Once a week we had management team  44  and it was important to be there on time and to appear relaxed and  45 . We would go around the conference table, each  46  on successes and areas of concern. When it came around to my  47 , all eyes would be on me as I had my chance to brag(自夸) on my programs and increasing  48 .
I thought I was pretty  49  at playing the role of the cool, calm, collected program manager 50  one week I arrived at one of these management team meetings and as the  51  went around the table, getting to me. There were  52  looks on the faces of the others looking at me. I started to feel a little  53  as that “ what’s going on?”  54  grew more intense. My closest colleague started doing this strange nodding thing in my direction. It was then that I  55  that I had my dress on inside-out.

【小题1】
A.purchase
B.changes
C.storage
D.choices
【小题2】
A.make sure
B.take care
C.help out
D.work out
【小题3】
A.check
B.speak
C.find
D.worry
【小题4】
A.Eventually
B.Actually
C.Fortunately
D.Hopefully
【小题5】
A.attention
B.way
C.devotion
D.duties
【小题6】
A.practices
B.interests
C.habits
D.routines
【小题7】
A.last
B.quick
C.careful
D.thorough
【小题8】
A.dashed
B.broke
C.burst
D.looked
【小题9】 A. work
B. meetings
C. spirits
C. tasks
【小题10】
A.confident
B.attractive
C.firm
D.tidy
【小题11】
A.fixing
B.concentration
C.reporting
D.settling
【小题12】
A.place
B.turn
C.time
D.position
【小题13】
A.fame
B.income
C.weight
D.numbers
【小题14】
A.bad
B.smart
C.good
D.clever
【小题15】
A.before
B.unless
C.until
D.though
【小题16】
A.show
B.discussion
C.party
D.game
【小题17】
A.angry
B.pleasant
C.curious
D.strange
【小题18】 A. uneasy
B. uncertain
D. unhappy
D. unfair
【小题19】
A.question
B.atmosphere
C.feeling
D.doubt
【小题20】
A.observed
B.realized
C.watched
D.suspected
 

完形填空 (共20小题;每小题1.5分,满分30分)
阅读下面短文,掌握其大意,然后从36—55各题所给的A、B、C、D四个选项中,选出最佳选项,并在答题卡上将该项涂黑。
In some cities, work holism(废寝忘食工作)is so common that people don’t consider it unusual. They accept the lifestyle as    36   . Government workers in Washington, D. C., 37, frequently work sixty to seventy hours a week. They don’t do this because they have to; they do it because they 38    to. Work holism can be a     39    problem. Because true workaholics would rather work than do anything else, they    40    have no idea of how to relax; that is, they might not    41 movies, sports, or other types of entertainment. Most of all, they 42    to sit and do nothing. The lives of workaholics are usually stressful, and this tension and worry can cause   43    problems such as heart attacks and stomach diseases.    44   , typical workaholics don’t pay much attention to their families. Their marriages may end in    45    as they spend little time with their families.
Is work holism    46    dangerous? Perhaps not. There are, certainly, people who work    47 under stress. Some studies show that many workaholics have great energy and interest in work. They feel    48    is so pleasurable that they are actually very happy. For most workaholics, work and entertainment are the same thing. Their jobs    49    them with a challenge; this keeps them busy and creative.
50    do workaholics enjoy their jobs so much? There are several    51    to work. Of course, it provides people with paychecks, and this is important. But it offers    52    financial security. It provides people with self-confidence; they have a feeling of satisfaction   53    they have produced a challenging piece of work and are able to say “I    54    it”. Psychologists claim that their work gives people an identity. After they take part in work, they    55   a sense of self and individualism.

【小题1】
A.strange B.boring C.pleasant D.normal
【小题2】
A.for exampleB.on the other hand C.what’s more D.after all
【小题3】
A.agree B.promise C.dare D.want
【小题4】
A.slight B.serious C.obvious D.difficult
【小题5】
A.stillB.probably C.certainly D.mostly
【小题6】
A.afford B.enjoy C.watch D.allow
【小题7】
A.dream B.decideC.intend D.hate
【小题8】
A.physical B.cultural C.social D.mental
【小题9】
A.Therefore B.However C.Anyway D.Besides
【小题10】
A.happiness B.silence C.failure D.loss
【小题11】
A.sometimes B.always C.seldom D.hardly
【小题12】
A.sadly B.differently C.efficiently D.slowly
【小题13】
A.study B.family C.life D.work
【小题14】
A.equip B.pack C.provide D.fill
【小题15】
A.When B.Why C.How D.Where
【小题16】
A.factors B.advantages C.steps D.ways
【小题17】
A.no more B.more or lessC.no more than D.more than
【小题18】
A.when B.before C.unless D.until
【小题19】
A.valued B.failed C.caught D.made
【小题20】
A.give B.lose C.get D.need

完形填空  (共15小题;每小题2分.满分30分)
阅读下面短文,掌握其大意.然后从1—15各题所给的A、B、C和D项中,选出最佳选项,并在答题卡上将该项涂黑。
Internet users will have to register using their real names before indulging in online games starting Sunday as part of a nationwide campaign to protect minors and improve management of the virtual gaming industry, authorities said.
The Ministry of Culture had ___1____ the regulation in late June. #资#源#网
The regulation, which will take effect on Aug 1, applies ___2____ all multiplayer role-playing and social networking games.
But both ardent game players and experts believe the policy will have___3____ impact on the industry.
Major online game operators in China, including Shanda and Tencent Games, said they had already implemented the real name registration policy some months ago and the move has not had an effect on their____4___.
Many also question the effectiveness of the policy, as it will fail to protect minors in the absence of a credible identity recognition system.
"Minors might as well borrow or even buy ID cards online if they really want to play games. So the new rule cannot really keep them ____5___," said Hu Dong, an avid gamer from Shanghai.
Li Li, deputy director of the Shanghai Information Law Association, ___6____. He said it was meaningless to promote real name registration____7___  an effective national identification system, ___8____  should ideally include other credible information of the players, such as their bank accounts, in order to be really effective.
"Without such a___9____, the move will only increase costs for the operators and bring them greater risks," said Li.
The Shanghai version of the regulation has made more detailed rules in a bid to protect ___10____  from virtual warfare.考#资#源#网
Online game vendors, for instance, are required to indicate at prominent positions of their websites whether or not the games are suitable for minors, who are ___11___ 18 years old
If unsuitable for minors, game operators should install a technical system prohibiting them ___12____  starting the games.
For those games rendered appropriate for minors, there should be no misleading information___13____ and a time limit should be in place to prevent kids from getting addicted to the games, according to the regulation.
"If everyone can use their real ID cards to register, then the policy would be good for both minors and adults," said Wu Hao, 22, a Shanghai resident who has been playing online games for more than a decade.
"Now many online games that contain violence have been modified to appear less __14__  to minors, but we as adults don't like that a screening system is necessary ___15____ we all can enjoy the games," he said.

【小题1】
A.issuedB.deliveredC.announcedD.decided
【小题2】
A.inB.toC.atD.on
【小题3】
A.greatB.muchC.littleD.a lot of#考#资#源#网
【小题4】
A.gamesB.customersC.operationD.business
【小题5】
A.awayB.asideC.downD.off
【小题6】
A.disagreedB.agreedC.refusedD.reputed
【小题7】
A.withB.inC.withinD.without
【小题8】
A.whichB.thatC.whatD.who
【小题9】
A.baseB.basisC.basementD.based
【小题10】
A.peopleB.adultsC.girlsD.minors
【小题11】
A.overB.aboutC.underD.at
【小题12】
A.fromB.awayC.withD.in
【小题13】
A.involvingB.involvedC.to involveD.being involved
【小题14】
A.interesting B.amazingC.frighteningD.exciting
【小题15】
A.so thatB.andC.becauseD.that

完形填空 (共15小题;每小题2分,满分30分)
阅读下面短文,掌握其大意,然后从下列各题所给的A、B、C和D项中,选出最佳选项,并在答题卡上将该项涂黑。
"I am going to have a dance performance tonight." Mary ran towards me with a rare bright smile on her face, saying, “I hope you'll come. ” She left   31   , disappearing in the throngs of people quickly.
I could hardly believe my ears, for Mary was a quite ordinary girl. I had never seen her   32 or wearing attractive clothes, moreover, she always wore her big black-frame glasses.
I arrived at the hall with the ticket, and found my seat. Her performance was the seventh one. I knew I would suffer from a hard time before her   33  , for I had no   34  of art, but her performance was worth  35 , no matter how long I would wait for. Time went slowly, I                               36   not to fall asleep.
Finally it came Mary’s turn. I opened my eyes as large as possible,   37   to lose anything. Wearing a golden and shining skirt, Mary appeared on the glorious stage. Her dress went well with the brilliant lights. I could feel all the audience in the hall   38  their eyes on her and it was also   39   for me to remove my sights from her.    40    with a charming smile, she looked like a pretty butterfly flying on the splendid     41  . After all the performances ended, I waited for her at the gate.
"Hi!" She stood in front of me with a bag and her crystal high-heeled shoes in her hands, and dressed as she used to be, but the making-up still could be seen. I expressed     42  to her. "I knew it would be wonderful." She could not hide her    43  , laughing like a child. Her crystal shoes were shinning in the wonderful    44   night. Suddenly I    45    that every girl has a pair of special shoes like the crystal shoes of Cinderella.

【小题1】
A.hurriedly B.worriedlyC.surprisedlyD.contentedly
【小题2】
A.taking up B.making upC.coming upD.getting up
【小题3】 
A.time B.chanceC.turn D.occasion
【小题4】 
A.requestB.need C.useD.sense
【小题5】
A.watchingB.readingC.listeningD.looking
【小题6】 
A.handledB.dealtC.foughtD.struggled
【小题7】 
A.fearingB.wishingC.wonderingD.ordering
【小题8】
A.attendedB.absorbed C.fixedD.pointed
【小题9】
A.right B.easy C.wrongD.hard
【小题10】
A.SingingB.PractisingC.PlayingD.Dancing
【小题11】
A.stageB.hallC.houseD.gate
【小题12】
A.thanksB.wishesC.congratulationsD.apologies
【小题13】
A.sadnessB.excitementC.enjoymentD.eagerness
【小题14】
A.starryB.rainyC.cloudyD.stormy
【小题15】 
A.thoughtB.realized C.expected D.supposed

完形填空(共20小题;每小题1.5分,满分30分)
阅读下面短文,掌握其大意,然后从下面各题所给的四个选项(A,B,C和D)中,选出最佳选项。
The party began shortly after Mr. Wood, who lived in the flat below, sighed to himself as he heard excited voices and the noisy music. Luckily he had  36 some work home from the office,  37  he kept himself busy for a couple of hours, thus managing to pay no attention to the noise 38. But by eleven o’clock he felt 39 and was ready to go to bed, though from his earlier experience he knew it was  40 trying to get to sleep. He undressed and lay for a while on the bed, trying to read, but he  41 himself reading the same page over and over again. He then turned off the light and  42 his head in the pillow. But 43 he could not shut  44 the noise, finally, after 45 seemed hours, his 46 was gone.
He jumped out of bed, 47 some clothing, marched 48 up the stairs, and walked into his neighbor’s flat. The owner of the flat, who 49 him in his dressing gown, came 50 the room and,51 Mr. Wood could say anything, cried, “My dear fellow, come and 52. I know our parties 53 you. I meant to send you 54” Mr. Wood’s anger disappeared then and there. He said, “I’d better go and get 55 . Minutes later, he returned, properly dressed, only to find that the party was nearly over.

【小题1】
A.takenB.carriedC.broughtD.fetched
【小题2】
A.with whichB.from whichC.whereD.when
【小题3】
A.outsideB.overhead C.downstairsD.nearby
【小题4】
A.badB.tiredC.sickD.hopeless
【小题5】
A.uselessB.necessaryC.possibleD.helpful
【小题6】
A.hadB.foundC.caughtD.felt
【小题7】
A.buriedB.restedC.shookD.turned
【小题8】.
A.till thenB.worse stillC.strange enoughD.even so
【小题9】.
A.awayB.offC.downD.up
【小题10】
A.itB.whatC.thatD.which
【小题11】
A.sleepB.strengthC.patienceD.anger
【小题12】
A.pulled onB.dressed upC.selectedD.wore
【小题13】
A.sadlyB.proudlyC.quietlyD.firmly
【小题14】
A.made fun ofB.stared atC.was angry withD.caught sight of
【小题15】
A.acrossB.aroundC.towardsD.by
【小题16】
A.asB.beforeC.thoughD.until
【小题17】
A.meet asB.sit hereC.join usD.scold me
【小题18】
A.should botherB.would bother C.need botherD.shall bother
【小题19】.
A.a noticeB.a messageC.an invitationD.an apology
【小题20】
A.washedB.changedC.dressedD.prepared

完型填空(共20小题;每小题1.5分, 满分30分)
阅读下面短文,从短文后各题所给的四个选项(A、B、C、D)中,选出可以填入空白处
的最佳选项,并在机读卡上将该选项涂黑。
There is a small shop about 200 meters from where I live that sells groceries, meat and other basic necessities. About 10 yearsa ago, there was a beggar who would go into the shop every day and ask the owner for a   21 . The owner,  22  he would love to help, simply didn’t have any jobs availabe, so he kept   23  the man’s office.
This situation continued   24  for a few months, until the owner   25  to give the homeless man a job which   26  sweeping outside the shop. Every single day form 5 a.m, the homeless man was there doing the very   27  he could for the   28 , making it the community’s favourite, even though it did earn him pennies.  29 , the owner saw how good a job the man was doing and gave him a job working   30  a cashier(收银员). He was watched closely to make sure that he didn’t   31  any of the money received from the sales. He was still homeless, after all. The homeless man did a/an   32  job as a cashier for over 2 years, and did such a good job that he was promoted to   33  the finances for the whole shop.
To my   34 , this was the arrangements up until 2 years ago, when the owner   35 . In his will, he only had one   36 , to give the whole shop to the now stable, “homeless” man. Now, I could walk into that shop and see him working as hard as   37 , with his own business that is still   38  and active 10 years after getting his job as a sweeper.
From this story, we can probably get the inspiration: work hard and give everything your best effort, even if it isn’t your   39  situation, it very well may turn out to   40  some day in the future.

【小题1】
A.coinB.homeC.jobD.meal
【小题2】
A.althoughB.unlessC.becauseD.if
【小题3】
A.expectingB.consideringC.acceptingD.refusing
【小题4】
A.againB.oftenC.weeklyD.daily
【小题5】
A.offeredB.agreedC.plannedD.failed
【小题6】
A.meantB.involvedC.includedD.trained
【小题7】
A.bestB.leastC.betterD.less
【小题8】
A.familyB.ownerC.interestD.moment
【小题9】
A.SuddenlyB.Fortunately C.QuietlyD.Eventually
【小题10】
A.forB.withC.asD.like
【小题11】
A.loseB.pocketC.spendD.save
【小题12】
A.honestB.loyalC.fantasticD.kind
【小题13】
A.guardB.raiseC.provideD.manage
【小题14】
A.knowledgeB.mindC.scareD.joy
【小题15】
A.got tiredB.became oldC.passed awayD.gave up
【小题16】
A.thoughtB.purposeC.requestD.suggestion
【小题17】
A.everB.necessaryC.expectedD.required
【小题18】
A.bigB.newC.shabbyD.popular
【小题19】
A.idealB.currentC.ownD.financial
【小题20】
A.becomeB.beC.happenD.do

完形填空(共15小题;每小题2分,满分30分)
阅读下面短文,掌握其大意,然后从下列各题所给的四个选项(A、B、C和D)中,选出最佳选项,并在答题卡上将该项涂黑。
The human nose is an underestimated tool. Humans are often thought to be  1___ smellers compared with animals, but this is largely because, unlike animals, we stand upright. This means that our noses are  2 to detecting those smells which float through the air,  3  the majority of smells which stick to surfaces. In fact though, we are extremely sensitive to smells, even if we do not generally realize it. Our noses are capable of  4 human smells even when these are  5  to far below one part in one million.
    6    , some people find that they can smell one type of flower but not another, while others are sensitive to the smells of both flowers. This may be because some people do not have the genes necessary to generate  7    smell receptors in the nose. These receptors are the cells which sense smells and send  8   to the brain. However, it has been found that even people insensitive to a certain smell at first can suddenly become sensitive to it when  9    to it often enough.
  The  10  for insensitivity to smell seems to be that brain finds it  11   to keep all smell receptors working all the time but can  12  new receptors if necessary. This may also explain why we are not usually sensitive to our own smells we simply do not need to be. We are not  13    of the usual smell of our own house but we  14    new smells when we visit someone else's. The brain finds it best to keep smell receptors _ 15   for unfamiliar and emergency signals such as the smell of smoke, which might indicate the danger of fire.

1. A. sensitive
B. outstanding
C. insensitive
D. awkward
2. A. limited
B. committed
C. devoted
D. conducted
3. A. catching
B. ignoring
C. missing
D. tracking
4. A. distinguishing
B. discovering
C. determining
D. detecting
5. A. reduced
B. reserved
C. rescued
D. refused
6. A. Fortunately
B. Strangely
C Happily
D. Amazingly
7. A. unusual
B. particular
C. unique
D. typical
8. A. signs
B. information
C. messages
D. signals
9. A. subjected
B. left
C. drawn
D. exposed
10A. expectation
B. expression
C. extension
D. explanation
11.A convenient
B. competitive
C. inefficient
D. adequate
12.A introduce
B. gather
C. develop
D. produce
13.A sure
B. sick
C. aware
D tired
14.A tolerate
B. resist
C. neglect
D. notice
15.A available
B. reliable
C. valuable
D. suitable
 

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